More Higgses at the LHC and the Electroweak Phase Transition
نویسندگان
چکیده
A cosmological first order electroweak phase transition could explain the origin of the cosmic matter-antimatter asymmetry. While it does not occur in the Standard Model, it becomes possible in the presence of a second Higgs doublet. In this context, we obtain the properties of the new scalars H0, A0 and H ± leading to such a phase transition, showing that its key LHC signature would be the decay A0 → H0Z, and we analyze the promising LHC search prospects for this decay in the ``bb̄ and ``W+W− final states. Finally, we comment on the impact of the A0 → H0Z decay on current LHC searches for A0 decaying into SM particles.
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